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Generator Sizing Calulator
Step 1 - Home Essentials
# of Units
Running Watts
Starting Watts
Lights (@ 60W)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Refrigerator
0
700
Stand Alone Freezer
0
700
Sump Pump
0
1000
1200
Well Pump
0
750
1000
Electric Water Heater
0
3800
Step 1 - Subtotal
Step 2 - Heating and Cooling
# of Units
Running Watts
Starting Watts
Space Heater
0
1500
Portable Fans
0
100
200
300
400
Humidifier
0
175
Dehumidifier
0
400
Furnace Fan Blower
0
700
800
Window AC - 10,000 BTU
0
1
2
3
4
5
Window AC - 12,000 BTU
0
1
2
3
4
5
Central AC - 10,000 BTU
0
1
2
3
Central AC - 24,000 BTU
0
1
2
3
Central AC - 40,000 BTU
0
1
2
3
Heat Pump
0
4700
Step 2 - Subtotal
Step 3 - Appliances
# of Units
Running Watts
Starting Watts
Kitchen
Microwave Oven
0
625
1000
Coffee Maker
0
1300
Electric Stove
0
2100
Toaster
0
850
Toaster Oven
0
1500
Dishwasher
0
1500
Food Processor
0
500
Electric Can Opener
0
170
Laundry
Washing Machine
0
1000
Electric Dryer
0
5400
Gas Dryer
0
1800
Iron
0
1200
Family
Stereo Reciever
0
450
LCD Television
0
1
2
3
4
5
Xbox/Playstation
0
40
Video Movie Player
0
100
Office
Desktop Computer
0
1
2
3
4
5
Fax Machine
0
150
Laser Printer
0
400
Inkjet Printer
0
10
Copy Machine
0
1300
Step 3 - Subtotal
Step 4 - Equipment and Tools
Running Watts
Starting Watts
Quartz Halogen Work Light
0
300
500
1000
Airless Paint Sprayer - 1/3 HP
0
600
Reciprocating Saw
0
1100
Electric Drill - 3/8" 4 Amps
0
500
Electric Drill - 1/2" 5.4 Amps
0
1100
Circular Saw - 7-1/4"
0
1500
Miter Saw - 10"
0
1800
Planer/Jointer - 6"
0
1800
Table Saw/Radial Arm Saw-10"
0
1800
Belt Sander
0
1000
Air Compressor - 1/3 HP
0
1000
Air Compressor - 1 HP
0
2000
Electric Griddle
0
1500
CD/DVD Player
0
100
Cell Phone Charger
0
25
Step #4 Subtotal
Total Running Watts
Estimated Watts Needed
Reset
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